Sectional glass cup.



OIIARLES B. RIDER, OF PHILADELPHIA, PENNSYLVANIA.

SECTIONAL GLASS CUP.

SPECIFICATION forming part of Letters Patent No. 648,435, dated May 1, 1900. Application filed October 26, 1899. Serial No.734,814=. (No'modeb) ously, on the size of the cup. The said base extension I) is molded or otherwise formed with a central recess 0, provided with screw threads 0. The supporting-base (indicated at E) is of non-fragile material-such as wood, hard rubber, or aluminiumand is of any suitable shape, preferably annular, as shown in Fig. 2, and is centrally recessed at d (see Figs. 1 and 2) to adapt it to receive the base of the glass cup, and said recess is provided with a central vertically-projecting stem D, with screw-threads d cut therein. Within the recess din the supporting-base E is fitted a flat cushion m, of some elastic substance, preferably rubber or cork, adapted to fit into said recess 01 and separatethe base of the glass from the supporting-base E and having a central opening m to encircle the projecting stem D of the supporting-base.

It is obvious that the projecting stem D, with its screw-threads d, of the supportingbase E must be adapted in size and character to register with the central recess (1 and with its screw-threads c of the base portion of the glass.

The extension-base b of the glass cup is shown in Fig. 1 as having a diameter suffrcieut to support the glass vertically as a baserest when detached from the non-fragile base E, and this is desirable for many obvious reasons, but is not essential in the combination with the latter and with the cushion.

In the modification shown in Figs. 5 and 6 the elastic cushion therein (marked m is pro vided with a like central opening m but with radial corrugations was shown in said figures, and the underface of the base portion 12' of the glass is provided with like radial corrugations 5 s, proceeding in the same manner from the periphery to central opening, the object or function of said corrugations being to prevent rotation of the parts too easily and to afford a tighter joint, especially when a rubber cushion is employe I am aware that it is not broadly new to make a sectional glass cup with detachable In said drawings, A represents the cup porand non-fragile base, either in the ordinary tion of a graduate-glass, a neck a thereon be forms of glass cups or specifically in that of ing non-essential, and b the base portion, the graduate-glass, and that various patents have diameter of which may be greater or less, as been heretofore issued for the particular desired, to adapt it to be centrally recessed, means of uniting-the glass portion and the such diameter or thickness depending, obvinon-fragile base portion of such structures.

T0 ct'll whom it may concern:

Be it known that I, CHARLES B. RIDER, a citizen of the United States, residing at Philadelphia, Pennsylvania have invented certain new and useful Improvements in Sectional Glass Cups, of which the following is a full, clear, and exact description, reference being bad to the accompanying drawings, forming a part of this specification.

My invention relates to sectional glass cups and to the means for uniting the parts thereof, and is particularly adaptedto the specific character of glass known as a graduateglass for druggists use.

It has for its principal object to make the device less breakable at or near its base portion; and it consists, primarily, in a glass provided with a base extension below the cup portion of such depth as to adapt it to have molded or otherwise formed therein a central longitudinal screw-threaded recess; also, in the combination therewith of a detachable base-piece, of non-fragile material, of suitable exterior shape and provided with an annular recess adapted to receive the base extension of the glass, said recess containing a central screw-threaded projection adapted to register with the screw-threaded recess in the glass; also, in the combination therewith of an elastic cushion adapted to fit into said recess in the detachable base and surround the proj ection therein.

My improvement also comprises a modified form of construction of the base of the cup and of the elastic cushion.

In the drawings illustrating my invention, Figure 1 is avertical section of a sectional glass cup in the form of a graduate-glass, illustratingtheseveralfeaturesot myinvention. Fig. 2 is a plan view of the non fragile base; Fig. 3, a plan view of the elastic cushion. Figs. 4, 5, and 6 are designed to illustrate the modified form of glass base and cushion, Fig. etbeing an elevation of said glass base, Fig. 5 a like view of the elastic cushion, and Fig. 6 a plan view of the latter.

My improvement hereinabove described" apart from the modifi hence to make a graduate of the to'which dru Having th claim as n Patent- 1. A sectional us described eW and desire to s glass cup, sion-base portion 1) of suitab ggists are accustomed.

my invention ed character of the glass usual form I ecure by Letters having an extencentrally recessed I substantially as described;

sion-base portion Z) i trally recessed at d and having a verticallyprojectingscrew-threaded ste call y-pro ectin 3 esame and the base. portionofthe glass;

2. A sectional glass cup having an extenof enlarged diameter, provided with radial corrugations s, s, and with a centrally-soPew-threaded recess a, a supporting base 'E of n 40 nular cushion same and the base portion stantially as described.

In testimonyiwhereof I have hereunto affixed my signature this 29th day-of Septen1- her, A. D; 1899.

CHARLES B. RIDER.

\ViLnesses: I

H. T. FENTON, V O. E. PARKER. 

